Ransomware Research
UselessDisk Ransomware
UselessDisk is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on March 1, 2018, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: DiskWriter.
Quick Facts
- Ransomware Family
- UselessDisk
- First Seen
- March 1, 2018
- Known Aliases
- DiskWriter
How UselessDisk Ransomware Works
Targeted Files
Encrypt MBR
Ransom Note and Payment Demands
After encrypting files, UselessDisk displays ransom notes demanding payment for file recovery:
Ransom message:
notes/note.txt
Note locations:
BootTechnical Indicators
Associated Executable Files
The following executable files are associated with UselessDisk ransomware:
UselessDisk.exeUselessDisk.bindiskwriter31.exebf6.exe
Elastio Can Help You
Don't let UselessDisk ransomware take over your data
Elastio provides advanced ransomware protection and recovery solutions to keep your organization safe.
About This Analysis
This UselessDisk ransomware analysis is part of Elastio's comprehensive ransomware detection database. Elastio provides advanced ransomware protection and recovery solutions, helping organizations defend against and recover from ransomware attacks like UselessDisk.
Last updated: July 30, 2025